Philena johnson



2 Sheets-Sheet 1. R. JOHNSON. NAIL MACHINE (No Model.)

No. 543,447. Patented July 23, 1895.

11v YEA/2'02 Twlw mwazcaaaamaav 3- Patented July 23, 1895.

RQJOHNSON. NAIL MACHINE -(No nodal.)

7/"!ZWE86'ES UNITED STATES PATENT OFFICE.

REUBEN JOHNSON, OE NORTHUMBERLAND, PENNSYLVANIA, ASSIGNOR TO LOUISIANA PHILENA JOHNSON, OE SAME PLACE.

NAIL-MACHINE.

SPECIFICATION forming part of Letters Patent No. 543,447, dated July 23, 1895.

Application filed December 5, 1894. Serial No. 530,913- (No model.)

To aZZ whom it may concern:

Be it known that I, RE BEN JOHNSON, a citizen of the United States'of America, residing in Northumberland, in the county of Northumberland, in the State of Pennsylvania, have invented a new and useful Nail- I Machine, of which the following is a specification.

My invention has relation to improvements in means or mechanism for cutting and pointing a driving-nailfrom a common rolled plate, and the object is to construct, make, and provide improved means for pointing cut-nails,

- as will be hereinafter'fully described, and 15 particularly pointed out in the claims, and which is clearly and distinctly illustrated in the drawings herewith accompanying, where- Figure 1 is a plan view of the bed-frame of a portion of the well-known nail-machine, the parts being shown partly in section and certain elements, as the heading-lever, driving mechanism, and the nipper connections be' ing omitted from the illustrations, because arranged and secured therein. Fig. 5 is adetail of the pushing-plate for moving the pointcutting die ofv the gripping-lever outward.

' Fig. 6 is a detail face view of the moving pointcutting die. Fig. 7 is a longitudinal vertical section of the improved back piece. Fig.8 is a transverse section taken on the line a; w of Fig. 7. Fig. 9 is a longitudinal section taken on a horizontal plane of the casing of the point-cutting dies. Fig. 10 is a transverse section'on the line y y of Fig. 9. Fig. 11 is a detail view of the holding-bolts for the pointcutting die and the gripping-die on the gripping-lever. Fig. 12 is a detail of the movable part of the back piece.

bed-frame of the machine, which is of the usual construction in highpost machines, having thereon at the front portion the bed- Referring to the drawings, A designates the I piece l, in which is formed the knife and die-,

bed 2, of such dimensions or capacity as to take and retain, the respective bed-dies and bed-knife, as shown and indicated in Figs. 1 and 2 of the drawings.

In the bed 2 is arranged the bed-die 3 of the usual construction, having a nail groove or score 4 transversely across its face end. Immediately adjoining this bed-die is arranged my improved back piece B, consisting of a substantial piece of metal rectangular in cross-section, as seen in Fig. 7 of the drawings. Centrally in the under side of this back piece is formed a groove 5, extending back to the rear portion of the casing, wherein the metal is left intact, as at 6, and at the frontend of the back piece the end is recessed or cut away, askat 7, on the under side for the purpose of permitting the movable part of the back piece to slide back or retreat when pushed by the nipper, as will be set forth more vfully hereinafter.

Across the walls of the back piece are formed dovetail grooves 8, in which are 'detachably' fitted dovetail-pieces of metal 9, and intermediate of these pieces 9 is fitted another dovetail-piece, the upper face of which is arranged on a higher plane than the other pieces 9 to serve as a stop-piece for. the stem of the movable part of the back piece to prevent this movable portion from being pushed out too far by the spring abutting it at the rear.

In the way channel or groove 5 is arranged the stem 10 of the movableportion of the back in normal position stands with the end face drawings, consists of a metal stem 10, fitting and commonly used solid back piece.

e I l a 543,447

of the head in alignment with and on the same incline as the end faceof the stationary part, as seen in Fig.7 of the drawings. It will also be perceived that when the movable part is pushed back by the nipper the combined back piece presents an end face having a lip and face identical with the lip and face of the old In this respect my invention differs from dies provided with clearers or plungers which serve simply to push the nail from the solid part of the back piece in which the clearer is arranged. r i V Across the face of the head 11 may be formed a groove 13 to take the nail when the nipper engages it and pushes back the movable part far enough to lodge the nail in the respective dies. At the rear portion of the back 'piece is a hole 14 made lengthwise of the piece, in

which is arranged a spring 15, the tension of which may be-adjusted by a screw 16 let in from the end.

0 designates the bed-knife, which is of the usual construction, and is secured in position by the usual tightening and adjusting screws.

It will be perceived by reference to Figs. 1 and 2 of the drawings that thesolid and 'stationary end of the back piece stands in advance of the ends of the point-cutting bed-die and the bed-die itself and is in alignment with the end of the bed-knife, so't-hat when the nail is severed from the plate and carried down by the moving knife (not shown) the nipper 17 will engage it and push it into the score or groove in the face of the back piece, or the nipper will hold the nail against the face of the back piece and force the movable part thereof back in alignment with the dies, where the nail is held gripped until completed. The stem of the back piece-rests or lies on the respective dovetail cross-pieces and slides thereon, which leaves a space below the stem, so that dust or scale which may drop down in the spaces will not interfere with the free action of the back piece.

The point-cutting dies are duplicates in construction oppositely arranged in their respective beds or seats, as shown in Fig. 1 of the drawings. They consist of a substantial three-sided open-end case or boxing D of the form shown in Figs. 9 and of the drawings, in which is arranged and disposed the point-cutting die D. having a plain die-piece 18, with point-cutting die formed therein, and at the rear portion 19 the die-body is broadened laterally to substantially fill the channel or opening of the boxing, as seen in Fig. 9 of the drawings. At the end of the part 19 is a stud or pin extending from the side, as at 20, which projects through a slot 21 intoa hole 22 in the wall of the boxing and bears against the end of aspring .23, so that the end of the die is held against the abutting and adjusting screw 24, let through the end wall 0t the bed, with its end disposed adjacent to the inner edge of the die, as seen in Fig. 1 of the drawings. To return the point-cutting die to its normal position after having beenpushed out in cutting the point, I arrange a spring 25 to bear with its end against the die and push it back, as seen in Figs. 1 and 2 of the draw- E designates the gripping-lever, having the die-bed 26 formed thereon, as usual. In this bed are arranged the gripping-die 27 and the moving point-cutting die, which, as heretofore stated, is a duplicate of the bed-point cuttingdie. The moving point-cuttingdie is returned to normal position by a spring 28.'bearing with its end against the die, as seen in Figs. 1 and 4 of the drawings.

To hold the moving dies in their bed the usual clamp 29 is used to clamp the grippingdie in place; and to clamp the moving point cutting die in its seat or bed I projectthrough the bed and axle of the gripping-lever a bolt 30, having a clamp-piece 31 to set on the upper face of the die, as shown, and on the lower projecting end of the bolt is fitted a tighteningnut 32, having a hand-piece 33, by which it is conveniently manipulated. The bolt passes down through a slot 34 in the bolt of the clamp 29, so that the clamps of the respective bolts will align on the respective dies.

To push the point-cuttingdies outward laterally and cause them to shear and clear orclean the point of the nail, a push piece or plate 35 is mounted on a stud or other suitable bearing 36 at the front of the grippinglever to bear With its inner edge against the point-cuttin g die, the plate being formed with a projecting lug 37 disposed at substantially right angles to the plate and in the path of the header, so that when the dies grip the nail and hold it the header comes up and pushes the contacted point-cutting dies laterally and shears the point of the nail of In the foregoing description the movable portion of the back piece is shown and described as provided with a score or groove across its face, which construction is suitable for making points on line with the sides of the nail; but the score or grooves may be dispensed with when the points are turnedwith edges between the sides of the nail.

The operation may be specified as follows: When the moving knife (not shown) cuts off the nail-blank from the plate and pushes it down to be engaged by the nipper, the latter then pushes the nail into the score of the movable part of the back piece, and the nail being held thus between the nipper and this movable part is carried back away from the gage under the stationary end of the back piece and into the scores of the bed-dies, where it is held until the respective moving dies come up to grip it and cut the point on the nail. The header then strikes the outer end of the blank to form the head, and with the same movement contacts the push-plate which moves the point-cutting dies outward and laterally and cleans thevpoint, and then lIO when the dies part the springs return the I claim, and desire to secure by Letters Pat-' cut, is

1. The improved back-piece, composed of a stationary partformed with a groove in its under portion and having a recess at its front end to receive the head of a movable portion,

a movable portion formed with a head to-set across the recess in the stationary portion and a stem to fit in the groove thereof, means to hold the stem in the groove and limit its 5, and recessed or cut-away front part 7, de-

tachable retaining pieces and stop-piece, the movable part 10 having head 11, and a spring 7 'to push the part 10 outward, as specified.

3. In a nail-machine for cutting points on nails, the combination of theherein described point-cutting dies composed of the boxing or casing, the die arranged therein and formed with an enlarged rear end portion and having lateral movement in the casing, and a spring to hold the die longitudinally'loaok in the casing.

4. In a nail-machine for cutting points on nails, the point-cutting dies herein described, composed of the three-sided open-end casing D having a hole 22, and slot2l let into it, and the point-cutting die D formed with the enlarged end-portion 19, and having a lug or pin 20 entering the slot, of the casing to engage the spring and hold the die back in the casing D,substantial1y as described.

In witness whereof I have hereto set my hand in the presence of two attesting witnesses;

REUBEN JOHNSON.

Attes-t:

FRANOK LOUBAND, J osEPHGREooRY. 

